PLANTS OP THE TRES MARIAS ISLANDS. 87 



terete, covered with a spreading or slightly retlexed grayish pu- 

 bescence; leaves ovate-lanceolate or oblong-lanceolate, 5 to 10 cm. long, 

 2 to 4 cm. broad, obtuse at the apex, entire, narrowed below into a 

 slender petiole, densely lineolate above, pubescent on either surface, 

 especially on the veins, later becoming glabrous; petioles about 2 cm. 

 in length; inflorescence terminatin,; the stem and branches in rather 

 close bracteate spikes; bracts oblong or obovate; bracteoles linear, 

 nearly 1 ( m. long, exireeding the calyx ; calyx about 5 mm. long, deeply 

 5-parted; divisions nearly e(|ual, lanceolate, acute, ciliate; corolla 2 to 

 2.5 cm. long; tube exceeding the limb; upper lip shortly 2 lobed, the 

 lower more deeply ;5 lobed, rather broad, somewhat plaited in the 

 throat; capsule 10 to 12 mm. long, pubescent. Collected by E. W. Nel- 

 son on Maria Madre Island of the Tres Marias group of islands, 3-25 

 May, 1897 (No. 424(5). 



"A species closely resembling B. comosa Nees, but with a much 

 shorter corolla, and broader lower lip. The leaves are also somewhat 

 larger, longer-petioled, and mucli less ])ubes<'ent. It nuiy be that fur- 

 ther material will prove this to be a variety of B. romosd Nees, but as 

 the material at hand shows no sign of intergradation, it seems best for 

 the present at least to regard Mr. Nelson's plant as n. distinct species." 



Lautana horrida H. B. K. 



Eeported from both northern anil southern Mexico. May •'> to 25, 

 1897 (No. 4187). 



Citharexylum affinis I). Don. 



This is a rare Mexican species which has been "compared with the 

 Prodromus specimen at (ieneva by C l>e Caudolle" — J. M. (x. May 3 

 to 25, 1897 (No. 4311). 



.Sigiphila pacifica Greenman. 



^giphila pacifiea GreeumaD, Proc. Amcr. Acad. 33:485. 1898. 



The original description is as follows : " Shrub 2.5 to 7 m. high ; stems 

 and branches terete, covered with a grayish brown bark and dotted 

 here and therewith lenticels, glabrous; branchlets terete, somewhat 

 compressed at the nodes, fulvous-pubescent; leaves opposite, oblong- 

 ovate, 5 to 15 cm. long, 3.5 to 7.5 cm. broad, more or less acuminate, 

 entire, rounded or rather abruptly narrowed at the slightly unecpial 

 base, glabrous, or at least glabrate above, with scattered, tawny, sub- 

 api»ressed hairsbeneath, especially upon the midrib and veins; petioles 

 less than 1 cm. in length; inflorescence terminating the stems and 

 branches in rather close paniculate cymes; peduncles, pedicels, the 

 subulate bracts and calyx covered by a fulvous subajjpressed pubes- 

 cence; calyx about 4 mm. long, 4-lobcd; lobes broader than long, 

 submucronate, greenish; corolla tubular, 10 to 12 mm. long, glabrous; 

 tube somewhat ampliated above; lobes oblong-elliptic, about 4 mm. 

 ]ong,obtuse ; stamensequal or rarely unequal, exserted ; filaments pubes- 

 cent below, glabrous above; drupe yellow, obovoid, 8 to 10 mm. long, G 



